Reality Check: Has immigration held down wages?

About 1 Month, 2 Days, 11 Hours, 31 Minutes ago.

The claim: Immigration has held down wages in the UK.Reality Check verdict: Current research suggests there was a small, negative impact on the wages of low-skilled workers, which was outweighed by other factors such as the impact of the financial crisis and rises in the minimum wage.
In a Brexit speech, Leave campaigner and former foreign secretary Boris Johnson said some big corporations had held wages down because they had access to so many workers from other countries. He said the UK needed to think "about how we control immigration". So, has it affected wages?
We'll start by looking at European migrants, because migration from other countries is already restricted, whereas workers from other European countries benefit from freedom of movement.
The Migration Advisory Committee (MAC), an independent body that advises the government, published a report in September 2018 about the impact of migration from the European Economic Area (EEA), which is the EU plus Iceland, Liechtenstein and Norway.
Remember that this sort of research is difficult to do - comparing what actually happened with what might have happened is complex and there is considerable uncertainty about the conclusions.